Sebastian Sr. Java Software Engineer

Sr Java Software Engineer

Metron Aviation

Jan 2023 - Mar 2026 (3 years 3 months)

Consulting for Metron Aviation through Elite IT (Argentina), contributing to the development of a large-scale air traffic management platform used in major airports. Worked with a remote engineering team in the United States, delivering high-quality backend features and system integrations across ~30 interconnected services. Built and enhanced Java backend services, integrating components through REST APIs, file-based workflows, and message queues. Improved system reliability and performance; supported production environments and resolved complex issues. Collaborated closely with US-based teams under Agile methodologies. Participated in code reviews, CI/CD automation, and technical documentation.

Sr. Java Software Engineer

Directa24

Mar 2021 - Jul 2022 (1 year 5 months)

Integration and maintaining of several payment processors around the globe including Mexico, Japan, United States, India and others, using REST and SOAP services. Design and develop for payment services and internal applications. JUnit testing referent. Mentoring Jr. developers.

Sr. Java Software Engineer

Wenance

Aug 2020 - Mar 2021 (8 months)

Project: Compass Core / Spain Microservices reactive implementation. Junit version and tests migration

Sr. Java Software Engineer

Overactive

Mar 2019 - Aug 2020 (1 year 6 months)

Client: XPO Logistics Project: Photo Viewer / Allowable Loads REST services implementation. Code review, merge and deploy. Research and improvement of cross-project architecture design, mentoring. Module referent. Project: Pickup Request Architecture design and project setup. REST services implementation. Mentoring

Sr. Java Software Engineer

MAvha

Oct 2018 - Mar 2019 (6 months)

Core system migration REST architecture. 100% remote distributed team. Service and UI development in different projects.

Senior Java Development Environment Consultant - Advanced

Oracle - Cablevision

Mar 2017 - Jun 2018 (1 year 4 months)

Client: Oracle - Cablevision Project: Commercial website - Fase II - Convergencia Analysis of user requirements and user stories. Development of new user stories from scratch, implementation and translation of screen mockups into actual functionality, frontend and backend implementation. Implementation of ATG Commerce - Endeca pipeline via creation of new cartridges for screen modularity and maximum user components reusability. Research and implementation of site login via SAML protocol and OAuth. Interaction with IDP configuration team. Research of ATG Commerce embedded shopping cart, customization and implementation based of the business complex logic (products, bundles, promotions, etc.) ATG Commerce site and product customizat

Senior Java Developer

Advanced Software

Apr 2016 - Mar 2017 (1 year)

Project: Caja Notarial Information exchange via meetings with the final user. Improvement support for UI and functionallities. UI creation, bussinness logic implementation (fullstack). Support and bug fixing. Technologies: Struts 2, Hibernate, Jquery, JSP, Oracle DB, Tomcat 7.

Sr. Java Developer

Advanced Software

Jun 2014 - Aug 2018 (4 years 3 months)

Senior Java Developer- Advanced Software Account

Monsanto Company

Jun 2014 - Dec 2016 (2 years 7 months)

In charge of Paraguay an Brazil Barter region, direct communication with the user, information retrieving and support. Main management headquarter were located in United States. Technical responsibility of Turns module of Argentina region. Task estimation, new functionalities development and bug fixing, communication with business analysts and testing teams. Backend, frontend and web services development. Branch administration and merges using SVN and GIT. Build and application deploy in different environments. Interaction with teams in different locations; functional analyst, testing, users, data base team, Integration Services (Web services) and Web Team (deploys). Team code review and code violations reported via Sonar and Tea

Sr. Software Engineer

Indra

Feb 2014 - May 2014 (4 months)

In charge of all Java section of the energy administration system, working directly with a team located in Spain. - Bugs analysis and resolutions in administration Applet (based on JGra). - Analysis for securing sistem via SSL on iPlanet 4.1, finally using authentication certificates. - Technologies: iPlanet 4.1, Solaris 8, Applets, JGra, Oracle database.

JAVA Developer

Globant

Jun 2011 - May 2013 (2 years)

Argentina Client: Globant Project: Glow Tasks: User Stories analisys for new fuctionalities, modules and application improving. War creation and application deployment in QC environment. Migration of both development and QC environments to Java 1.6 and Tomcat 6.3. Team code reviewing Technologies: Agile, Spring, HTML, JSP, JavaScript, JQuery, Maven, Eclipse, Tomcat, Hibernate, Postgres, Code Review. Globant Labs Project: Globiculum Tasks: Start up of the project, configuration with Maven dependecies. Research of LinkedIn API to retrieve users information. Technologies: Katari, Spring, HTML, Maven, Eclipse, Postgres.

SSr. JAVA Developer

Advanced Software

May 2010 - Jun 2011 (1 year 2 months)

Project: Suscripciones - Clarin 365 - Fidelization program for newspaper readers Tasks: Development of new functionalities, improvement of code, bug fixing and post-production support. Direct interaction with testing and analyst groups, testing support. Use of SCRUM daily meetings and tasks estimations time. Technologies: ExtJS, JSON, EJB, Jasper Reports, IReport, JPA, Hibernate, MVC Framework (owned by AGEA), SVN, JBoss AS, MySQL, Eclipse IDE, JIRA,.

H

SSr. JAVA Developer

Huenei Consultora Informatica

Feb 2010 - Apr 2010 (3 months)

Asofarma Proyect, implementing an Health Professional Agency system in Uruguay, Venezuela and Chile. The technologies used are Spring, EJB 3.0, ZK, Hibernate and Postgres under Ubuntu 9.04 Operative System. Tasks: Bug fixing and evolutive development interacting with Functional Analyst and testing team members. In charge of tag creation and versioning for client implementation.

SSr. JAVA Developer

IT Resources S.A

May 2009 - Jan 2010 (9 months)

May 2009 - January 2010 (9 months) ~~~~~~ - Working in the Banco de Chile project, migrating, updating and improving its Home Banking by using Java, Struts, EJB and WS technologies, running in a Tomcat and/or JBoss server and WAS 5.1 as Application Server. - Improving application performance by using PMD tool. Checking source code for better readability, memory efficiency and system stability. Client: Neoris Argentina Project: Working in the Banco de Chile project, migrating, updating and improving its Home Banking by using Java, Struts, EJB and WS technologies, running in a Tomcat and/or JBoss server and WAS 5.1 as Application Server. Improving application performance by using PMD tool. Checking source code for better

Jr. JAVA Developer

Synapsis

Jun 2008 - Jan 2009 (8 months)

June 2008 - January 2009 (8 months) Proyect:Synergia 4J - Utilities Comercial System. Customer Serice Module. Client: Codensa S.A. (Colombia). Tasks: Use Case Design and Implementation. System Implementation and maintaining support, evolutive and corrective maintaining. Functional specifications revision. Technologies: Java, Kendari Framework (owned by the Company - based on Hibernate and Spring). XML. Database: Oracle. Application Server: Tomcat.

U

LAMP Developer

United States Client

Mar 2005 - Feb 2006 (1 year)

Working as a freelance independent developer in a LAMP environment (Linux, Apache Tomcat, MySQL and PHP). The web project was the development of a web site, which spidered and indexed other websites, centralizing a huge amount of information. The interaction was directly with the client via chat and teleconference. - The web site was developed from the beginning, obtaining client requirements and designing web site name, layout, logo and graphics, database architecture and PHP and Java Script code, besides acquiring domain name, hosting and establishing its configuration. ~~~~~~ - Search Engine Optimization: optimizing metatags and keywords, maximizing web site visits, search engines spidering and improving site positioning

Jr ABAP Programmer

Paradigma

Jan 2005 - Feb 2005 (2 months)

Analisis and development of a pallet control module for SAP system of VITAL S.A. organization, project finished in two months.

Customer Service

Banco Central de la Repúblia Argentina

Aug 2004 - Dec 2004 (5 months)

Internship - Support and research on first level duties to all users in the organization (about 2000). Telephone and personal support in any kind of issues, from hardware, Windows configurations (networking and local), office packages and intern developer tools.

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